Intelligent low-carbon horizontal flow sedimentation tank sludge discharge method and intelligent low-carbon horizontal flow sedimentation tank sludge discharge system
By deploying sludge monitoring modules and information databases, intelligent control of the sludge discharge system in the horizontal flow sedimentation tank was achieved, solving the problem of insufficient dynamic adjustment in traditional sludge discharge methods, improving the operating efficiency and energy efficiency of the sedimentation tank, and reducing energy consumption and maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI MUNICIPAL ENG DESIGN INST (GRP) CO LTD
- Filing Date
- 2026-01-29
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional horizontal flow sedimentation tank sludge removal methods cannot be dynamically adjusted according to actual conditions, resulting in excessive or excessive sludge accumulation, which affects sedimentation efficiency and energy consumption. The degree of automation is low, and it is impossible to accurately control the amount of sludge discharged and energy, making it difficult to meet the stable and efficient operation requirements of modern wastewater treatment plants.
Deploy a sludge monitoring module to obtain key parameter information. By establishing an information database, analyze the total amount of sludge discharged from the sludge discharge pipe, the total energy value, and the uniformity coefficient to achieve intelligent linkage control and parameter coordination adjustment of the sludge discharge system. This includes segmenting the sludge discharge pipe for segmented control, adjusting the speed of the sludge discharge pump and the valve opening, and optimizing the sludge discharge process.
It improves the automation level of the sludge discharge system, reduces manual intervention, ensures the efficient and stable operation of the sedimentation tank, reduces energy consumption, optimizes the sludge return ratio and equipment maintenance costs, and enhances the reliability and continuity of the system equipment.
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Figure CN121988079A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wastewater treatment technology, specifically to an intelligent, low-carbon method and system for sludge removal from a horizontal flow sedimentation tank. Background Technology
[0002] The sludge removal process in horizontal flow sedimentation tanks plays a crucial role in the stable operation and efficient treatment of wastewater treatment systems. However, traditional sludge removal methods and systems for horizontal flow sedimentation tanks have certain limitations and cannot meet the requirements of the wastewater treatment industry in terms of treatment effect, energy utilization, and degree of automation.
[0003] Traditional methods for sludge removal in horizontal flow sedimentation tanks typically involve timed sludge removal or setting the sludge removal cycle and volume based on experience. These methods cannot be dynamically adjusted according to the actual sludge removal situation. In actual operation, excessive sludge accumulation or over-discharge can easily occur in the sedimentation tank. Excessive sludge accumulation will occupy the effective volume of the sedimentation tank, interfere with the normal sedimentation process, reduce sedimentation efficiency, and thus affect the wastewater treatment effect. On the other hand, over-discharge will result in excessively low sludge concentration, reduce the efficiency of subsequent sludge treatment, increase the burden on subsequent treatment stages, and increase energy consumption.
[0004] From an energy utilization perspective, the timed sludge discharge mode presents a significant energy waste problem. The sludge pump operates continuously at a fixed frequency, maintaining the same working state regardless of the amount of sludge in the tank, resulting in energy waste and contradicting the requirements of energy conservation and emission reduction. Regarding automation, traditional sludge discharge methods rely heavily on manual operation and monitoring, which not only increases wastewater treatment costs but is also susceptible to subjective factors, leading to unreasonable sludge discharge parameter settings and unstable sludge discharge system operation. Manual operation struggles to respond quickly to sudden changes in sludge volume, failing to meet the stable and efficient operation requirements of modern wastewater treatment plants.
[0005] Meanwhile, the existing intelligent sludge discharge method control algorithm is relatively simple, only considering a few influencing factors. It cannot fully and deeply reflect the complex operating conditions in the horizontal flow sedimentation tank, and the operating conditions are not accurately grasped. It cannot effectively analyze key indicators such as sludge discharge volume, pipeline energy status and sludge discharge uniformity, resulting in inaccurate and unsystematic sludge discharge control, making it difficult for the sedimentation tank to achieve efficient and low-energy operation.
[0006] To achieve efficient and stable operation of wastewater treatment methods and related systems, and to promote the long-term sustainable development of wastewater treatment plants, it is necessary to overcome the shortcomings of traditional sludge discharge methods, make up for the deficiencies of existing sludge discharge control, comprehensively consider the impact of various influencing factors on the operation of horizontal sedimentation tanks, and realize intelligent control and coordinated adjustment of the sludge discharge system. Summary of the Invention
[0007] To address the shortcomings of existing methods and meet the needs of practical applications, in order to achieve efficient and stable operation of wastewater treatment methods and systems and promote the long-term sustainable development of wastewater treatment plants, it is necessary to establish intelligent algorithms to obtain key parameter information, and then comprehensively consider the effects of various influencing factors on the operation of horizontal sedimentation tanks, so as to realize intelligent control and collaborative optimization adjustment of the sludge discharge system. On the one hand, this invention provides an intelligent, low-carbon sludge removal method for a horizontal flow sedimentation tank. The method includes the following steps: deploying a sludge monitoring module to monitor data from the horizontal flow sedimentation tank and establishing an information database for the tank; dividing the sludge discharge pipe according to the information database and obtaining the pipe segmentation results; combining the pipe segmentation results and the information database to analyze the total sludge discharge volume, total energy value, and uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank; regulating the cross-sectional inflow rate, hydraulic balance state, sludge discharge pipe energy, and sludge return ratio in the horizontal flow sedimentation tank based on the total sludge discharge volume, total energy value, uniformity coefficient, and the information database; and realizing intelligent linkage control and parameter coordinated adjustment of the sludge removal equipment in the horizontal flow sedimentation tank based on the cross-sectional inflow rate, hydraulic balance state, sludge discharge pipe energy, and sludge return ratio.
[0008] The comprehensive analysis of multi-parameter information in this invention facilitates intelligent linkage control and coordinated parameter adjustment of sludge discharge equipment, reduces manual intervention, and improves the reliability and operational continuity of the system equipment.
[0009] Optionally, the step of segmenting the sludge discharge pipe according to the information database and obtaining the pipe segmentation result includes: obtaining parameter information of the sludge discharge pipe based on the information database; dividing the pipe into equal segments from the beginning of the sludge discharge pipe according to the parameter information to obtain the segmented sludge discharge pipe; defining pipe segmentation parameters by combining the segmented sludge discharge pipe and the parameter information and obtaining the pipe segmentation result. The pipe segmentation result of this invention helps to achieve segmented control of the sludge discharge pipe, and can adjust the speed of the sludge discharge pump, valve opening, etc., according to the pipe parameter information and sludge discharge requirements, which helps to achieve automation and intelligence in the sludge discharge process.
[0010] Optionally, the step of segmenting the sludge discharge pipe according to the information database and obtaining the pipe segmentation results, and then analyzing the total sludge discharge, total energy, and uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank based on the pipe segmentation results and the information database, includes: introducing the law of conservation of mass and the differential piecewise continuity equation; obtaining the sludge discharge conservation expression based on the law of conservation of mass, the differential piecewise continuity equation, and the pipe segmentation results; deriving the cross-sectional inflow analysis formula for each pipe segment based on the sludge discharge conservation expression; analyzing the cross-sectional inflow of each pipe segment using the cross-sectional inflow analysis formula; and integrating and analyzing the cross-sectional inflow of each pipe segment to obtain the total sludge discharge of the sludge discharge pipe in the horizontal flow sedimentation tank. This invention analyzes the cross-sectional inflow of each pipe segment, revealing the local sludge discharge patterns at different locations, which helps to address problems encountered during the sludge discharge process and optimize the design and operation plan of the sludge discharge pipe.
[0011] Optionally, the step of segmenting the sludge discharge pipe according to the information database and obtaining the pipe segmentation results, and then analyzing the total sludge discharge, total energy value, and uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank based on the pipe segmentation results and the information database, includes: analyzing the head loss value of the pipe segment based on fluid dynamics information, pressure head calculation formula, and the pipe segmentation results; introducing the law of conservation of energy and combining the law of conservation of energy and the head loss value to obtain the energy balance equation of the pipe segment; deriving the energy balance equation of the pipe segment and obtaining the energy analysis formula of the pipe segment; optimizing the energy analysis formula of the pipe segment based on the influence of pressure head and flow velocity changes on the energy value of the pipe segment to obtain the energy value prediction function of the pipe segment; obtaining the energy value of the pipe segment using the energy value prediction function of the pipe segment; and integrating and calculating the energy value of the pipe segment to obtain the total energy value of the sludge discharge pipe in the horizontal flow sedimentation tank.
[0012] This invention integrates and calculates the energy values of pipeline segments to obtain the total energy value of the sludge discharge pipe, which can comprehensively assess the energy consumption of the entire sludge discharge system. The total energy value reflects the total energy consumed by the sludge discharge system during operation and is an important indicator for measuring the system's energy utilization efficiency, providing a reference for the formulation of energy-saving and consumption-reducing measures.
[0013] Optionally, the step of segmenting the sludge discharge pipe according to the information database and obtaining the pipe segmentation results, and combining the pipe segmentation results and the information database to analyze the total sludge discharge, total energy, and uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank, includes: introducing a uniformity coefficient ratio analysis function and the law of conservation of energy; deriving the uniformity coefficient ratio analysis function based on the law of conservation of energy and the pipe segmentation results, and obtaining the sludge uniformity coefficient analysis formula; and using the sludge uniformity coefficient analysis formula to analyze the uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank.
[0014] This invention analyzes the uniformity of sludge discharge using a sludge uniformity coefficient analysis formula, which enables timely and effective discharge of sludge from the sedimentation tank, maintaining the good operating condition of the sedimentation tank, thereby improving the treatment efficiency of the sedimentation tank and the quality of the effluent.
[0015] Optionally, the regulation of the cross-sectional inflow rate, hydraulic balance state, sludge discharge pipe energy, and sludge return ratio in the horizontal flow sedimentation tank based on the total sludge discharge, the total energy value, the uniformity coefficient, and the information database includes: analyzing the inflow rate conditions of the sludge discharge pipe by combining the cross-sectional inflow rate of the pipe segments and the total sludge discharge; adjusting the sludge discharge time interval and inflow / outflow velocity based on the inflow rate conditions and the information database; and achieving scientific regulation of the cross-sectional inflow rate in the horizontal flow sedimentation tank based on the sludge discharge time interval and the inflow / outflow velocity. This invention, by adjusting the sludge discharge time interval and inflow / outflow velocity based on the inflow rate conditions, thereby achieving scientific regulation of the cross-sectional inflow rate, can improve the water flow state within the sedimentation tank.
[0016] Optionally, the regulation of cross-sectional inflow, hydraulic balance, sludge discharge pipe energy, and sludge return ratio in the horizontal flow sedimentation tank based on the total sludge discharge, the total energy value, the uniformity coefficient, and the information database includes: monitoring the head changes in the sludge discharge pipe in conjunction with the head loss value, the segmented energy value of the pipe, and the total energy value; regulating the sludge discharge frequency of the sludge discharge pipe and increasing pipe flushing measures based on the head changes and the information database; and achieving effective regulation of the hydraulic balance in the horizontal flow sedimentation tank based on the sludge discharge frequency and the pipe flushing measures.
[0017] The present invention can reduce the wear and tear on sludge discharge pipes and related equipment by reasonably controlling the sludge discharge frequency and taking pipeline flushing measures, and achieve effective control of hydraulic balance. This allows the equipment to operate under normal load, reducing wear and damage, and lowering equipment maintenance and replacement costs.
[0018] Optionally, the step of regulating the cross-sectional inflow, hydraulic balance, sludge discharge pipe energy, and sludge return ratio in the horizontal flow sedimentation tank based on the total sludge discharge, the total energy value, the uniformity coefficient, and the information database includes: optimizing the sludge return ratio control model based on the scraper control model and the information database to obtain an improved sludge return ratio control model; monitoring the effluent quality and sludge concentration of the horizontal flow sedimentation tank using the improved sludge return ratio control model; and dynamically adjusting the sludge return ratio based on the effluent quality and the sludge concentration to achieve regulation of sludge return in the horizontal flow sedimentation tank.
[0019] This invention dynamically adjusts the sludge return ratio based on an improved model, which can avoid the adverse effects of excessive or insufficient sludge return on sedimentation, optimize sludge sedimentation performance, and improve the solids load and treatment capacity of sedimentation tanks.
[0020] Optionally, optimizing the sludge return ratio control model based on the scraper control model and the information database includes: introducing a scraper control model, which includes a scraper speed control model and a sludge scraper self-adjustment control model; obtaining a default scraper speed through the scraper speed control model; obtaining effluent suspended solids information based on the default scraper speed and the sludge scraper self-adjustment control model; and optimizing the sludge return ratio control model based on the effluent suspended solids information, the scraper control model, and the information database.
[0021] This invention obtains a default scraper speed based on a scraper speed control model, ensuring that the scraper effectively removes sludge from the bottom of the tank during the scraping process. The scraper's self-adjusting control model automatically adjusts the scraper according to actual operating conditions. Secondly, to efficiently execute the intelligent low-carbon horizontal flow sedimentation tank sludge removal method provided by this invention, this invention also provides an intelligent low-carbon horizontal flow sedimentation tank sludge removal system, including a processor, input devices, output devices, and a memory. The processor, input devices, output devices, and memory are interconnected. The memory stores a computer program, which includes program instructions. The processor is configured to call the program instructions to execute the intelligent low-carbon horizontal flow sedimentation tank sludge removal method as described in the first aspect of this invention. The intelligent low-carbon horizontal flow sedimentation tank sludge removal system of this invention has a compact structure and stable performance, enabling stable execution of the intelligent low-carbon horizontal flow sedimentation tank sludge removal method provided by this invention, thus improving the overall applicability and practical application capability of this invention. Attached Figure Description
[0022] Figure 1 This is a flowchart of the intelligent low-carbon horizontal flow sedimentation tank sludge removal method of the present invention; Figure 2 This is a schematic diagram of the pipeline segmentation in the intelligent low-carbon horizontal flow sedimentation tank sludge removal method of the present invention; Figure 3 This is a structural diagram of the intelligent low-carbon horizontal flow sedimentation tank sludge removal system of the present invention. Detailed Implementation
[0023] See Figure 1 To achieve intelligent and sustainable development of horizontal flow sedimentation tanks in wastewater treatment plants, key parameters are selected and a computational model is constructed to accurately obtain parameter information for the horizontal flow sedimentation tanks. Furthermore, by comprehensively considering the impact of various influencing factors on the operation of the horizontal flow sedimentation tanks, this invention facilitates intelligent control and coordinated adjustment of the sludge removal equipment. This invention provides an intelligent, low-carbon sludge removal method for horizontal flow sedimentation tanks, comprising the following steps: S1. Deploy the sludge monitoring module to monitor data from the horizontal flow sedimentation tank and obtain an information database of the horizontal flow sedimentation tank. The specific implementation steps and contents are as follows: In order to achieve precise control over the operating status of the horizontal flow sedimentation tank and provide data support for subsequent intelligent control and optimization, it is necessary to reasonably deploy sludge monitoring modules to conduct comprehensive and effective data monitoring of the horizontal flow sedimentation tank, thereby obtaining an information database of the horizontal flow sedimentation tank.
[0024] Sensor selection for the data monitoring module: The sludge monitoring module is the core of the data monitoring system, which integrates various types of sensors to achieve real-time and accurate monitoring of various parameters in the sedimentation tank.
[0025] The sludge concentration detection instrument is designed based on acoustic principles. It utilizes the relationship between the propagation speed of ultrasonic waves in sludge and the sludge concentration to detect the sludge concentration. Based on this, it can ensure accurate measurement of sludge concentration at different locations in the sedimentation tank under different operating conditions, providing a data basis for subsequent analysis of sludge distribution and sedimentation effect.
[0026] The sludge thickness sensor uses ultrasonic technology to obtain real-time information on the thickness of the sludge layer. The ultrasonic sensor emits ultrasonic pulses and measures the time it takes for the ultrasonic waves to travel from the emission point to the surface of the sludge layer and back. By combining this measurement with the propagation speed of the ultrasonic waves in the medium, the thickness of the sludge layer can be output, enabling real-time monitoring of the thickness and changes in the sludge layer.
[0027] Water quality monitoring sensors can monitor key water quality indicators such as suspended solids concentration and turbidity. Suspended solids concentration sensors use light scattering or transmission methods to calculate the concentration of suspended solids by measuring the intensity change of light after it interacts with suspended solids in water. Turbidity detectors are based on light scattering, calculating the turbidity value of a water sample by measuring the intensity of scattered light. These water quality indicators can directly reflect the effluent quality and treatment effect of the sedimentation tank, providing important information for evaluating the operational performance of the sedimentation tank.
[0028] Flow sensors are used to measure the amount of sludge discharged. They can measure the volume or mass of sludge passing through the sludge discharge pipe per unit time. Different types of flow sensors can be used, such as electromagnetic flow meters, turbine flow meters, or mass flow meters. In this embodiment, the equipment can be selected according to factors such as the material, diameter, and characteristics of the sludge discharge pipe to ensure the accuracy of the data monitoring results.
[0029] The time sensor can accurately record the sludge discharge time, providing time parameters for analyzing the patterns of the sludge discharge process and optimizing the sludge discharge strategy. The time sensor can be integrated with the sludge discharge control system to record the start and end times of each sludge discharge in real time and transmit the data to the sludge monitoring module for storage.
[0030] Sludge concentration detection instruments and water quality monitoring sensors are installed at the inlet end to monitor the sludge concentration and initial water quality indicators in the wastewater entering the sedimentation tank. This helps to understand the water quality characteristics of the influent, provides basic data for equipment control, and facilitates timely adjustment of the sedimentation tank's operating parameters.
[0031] In this embodiment, a sludge concentration detection instrument and a water quality monitoring sensor are installed at the effluent end to monitor the effluent water quality and sludge content of the sedimentation tank in real time. By comparing the data with the water quality data at the influent end, the treatment effect of the sedimentation tank can be accurately evaluated, and it can be determined whether the sedimentation tank is operating normally, which is conducive to taking corresponding adjustment measures in a timely manner.
[0032] The central section is the core area of the horizontal flow sedimentation tank, where sludge sedimentation and separation mainly take place. Sludge concentration monitoring instruments, sludge thickness sensors, and water quality monitoring sensors are installed from the beginning to the middle of the sludge discharge pipe. By monitoring the sludge concentration, thickness, and water quality indicators at this central location, it is possible to effectively understand the sedimentation process and distribution patterns of sludge within the sedimentation tank. This allows for the timely detection of problems such as uneven sludge sedimentation or localized sludge accumulation, providing a basis for adjusting and optimizing sludge discharge strategies.
[0033] In this embodiment, the collected data is transmitted to the sludge monitoring module via wired or wireless means. In practical applications, the appropriate transmission method or a combination of wired and wireless means can be selected according to factors such as the size and layout of the sedimentation tank and the site environment to ensure that the data can be transmitted to the sludge monitoring module accurately and in a timely manner.
[0034] After receiving data from the sensors, the sludge monitoring module performs preliminary processing and verification, removing abnormal and erroneous data. It then stores the valid data in its built-in database for storage, retrieval, and management. To ensure data security and reliability, the database should have backup and recovery capabilities, performing regular backups to prevent data loss.
[0035] The aforementioned database not only contains real-time monitoring data such as sludge concentration, thickness, and water quality indicators, but also records operating parameters such as sludge discharge time, maximum sludge discharge volume, and sludge discharge frequency, as well as data related to the sludge return ratio. This data forms the basis for subsequent control and optimization of the horizontal flow sedimentation tank, facilitating a better understanding of its operational patterns and performance characteristics, and providing an information foundation for the intelligent linkage and coordinated control of sludge discharge equipment in horizontal flow sedimentation tanks.
[0036] S2. Based on the information database, the sludge discharge pipe is segmented and the pipe segmentation results are obtained. Combining the pipe segmentation results and the information database, the total sludge discharge, total energy value, and uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank are analyzed. The specific implementation steps and contents are as follows: To achieve management and optimized control of the sludge discharge pipe in the horizontal sedimentation tank, it is first necessary to scientifically divide the sludge discharge pipe based on the information database and obtain the pipe segmentation results.
[0037] The first step is to obtain the parameter information of the sludge discharge pipe based on the information database.
[0038] In actual sludge discharge, the flow of the sludge-discharging fluid within the pipeline is quite complex. To simplify subsequent calculations and analysis, this embodiment assumes the sludge-discharging fluid within the discharge pipe to be uniform based on actual monitoring data, and treats the entire discharged dry sludge volume or sludge-discharging water volume as a continuous sludge discharge volume. Based on this, the sludge discharge process can be set as a continuous and stable fluid motion process, which facilitates the quantitative analysis and calculation of the sludge discharge process using the basic principles and methods of fluid mechanics, laying the foundation for subsequent parameter setting and model establishment.
[0039] Based on the above conditions and the monitoring data in the information database, the key parameters of the sludge discharge pipe are set as follows: Flow rate at the end of the sludge discharge pipe It reflects the final sludge discharge capacity of the sludge discharge pipe and is one of the important indicators for measuring the working efficiency of the sludge discharge system. The above parameter values can be obtained by monitoring the volume of sludge discharge fluid flowing through the end of the sludge discharge pipe per unit time.
[0040] Flow velocity at the end of the sludge discharge pipe This reflects the speed of fluid movement at the end of the sludge discharge pipe. Based on the flow rate... and the cross-sectional area of the end of the sludge discharge pipe The flow velocity can be calculated. The flow rate directly affects the sludge discharge effect and efficiency. Too fast a flow rate will prevent sludge particles from settling properly, while too slow a flow rate will cause sludge to accumulate in the pipe.
[0041] Pressure head at the end of the sludge discharge pipe It is related to the pressure energy of the fluid, which represents the pressure energy per unit weight of fluid. The size of the pressure head plays an important role in maintaining the flow of fluid in the pipe and overcoming pipe resistance.
[0042] Pipe length Determining the overall length range of the sludge discharge pipe has a significant impact on subsequent pipeline segmentation and the distribution of sludge discharge within the pipeline. The total length of the pipe can be accurately obtained by measuring or reviewing the design drawings. The value.
[0043] The above parameters form the basis for subsequent sludge discharge volume analysis and calculation. Accurately obtaining these parameters is of great significance for gaining a deeper understanding of the operating characteristics of the sludge discharge system and optimizing sludge discharge strategies.
[0044] The second step is to divide the sludge discharge pipe into equal parts based on the parameter information. In this example, the pipe is divided into equal parts from the beginning of the sludge discharge pipe to obtain the divided sludge discharge pipe.
[0045] The pipeline is divided into equal segments starting from the beginning of the sludge discharge pipe. In this embodiment, the equal segmentation method ensures that each pipeline segment has similar geometric and flow characteristics, which facilitates the subsequent analysis and calculation of each segment using a unified model and method, while improving the accuracy and reliability of the calculation results.
[0046] In this embodiment, the sludge discharge pipe is divided into... There are several pipe segments, each with a length of [length missing]. .in, The value should be selected reasonably based on the actual situation. The larger and finer the segments, the more accurate the description of the sludge discharge fluid flow within the pipe, and the closer the calculation results are to the actual situation. However, Taking excessively large values will significantly increase the computational load and prolong the calculation time. Therefore, in practical applications, it is necessary to comprehensively consider the requirements of computational accuracy and efficiency, and determine the appropriate value through simulation analysis. value.
[0047] The third step involves defining the pipeline segmentation parameters by combining the segmented sludge discharge pipes and parameter information, and obtaining the pipeline segmentation results.
[0048] Based on the segmented sludge discharge pipe, arbitrarily select one pipe segment. For analysis, please refer to [link / reference]. Figure 2 The diagram shows the pipe sections in the sludge discharge pipe, where the pressure head of each pipe section is... and The analysis and marking are based on the center position of each pipe segment, which helps to accurately obtain the changes in fluid flow energy for individual pipe segments. By conducting the analysis, it can be gradually extended to the entire sludge discharge pipe, thereby gaining a comprehensive understanding of the flow characteristics of the sludge discharge fluid within the pipe.
[0049] Based on fluid mechanics principles and actual monitoring data, the pipeline is divided into sections. Define the following parameters: Section parameters: That is, the length of each pipe segment obtained by average division. .
[0050] Cross-sectional inflow Indicates the number of pipe segments flowing into the pipeline per unit time. The volume of sludge discharge fluid. This parameter can be monitored by installing a flow sensor at the inlet of the pipeline section, or estimated based on the outflow rate of the upstream pipeline section.
[0051] Flow rate Based on the cross-sectional inflow rate Pipeline segmentation cross-sectional area The flow velocity was calculated using the formula. It reflects the motion state of the fluid at the inlet of the pipe section.
[0052] Pressure head This represents the pressure energy per unit weight of fluid at the inlet of a pipe section, and can be measured using a pressure sensor.
[0053] Cross-sectional parameters: The cross-sectional outflow rate is Because the fluid flow is affected by various factors during the flow within the pipeline section, such as pipeline resistance, sedimentation and suspension of sludge particles, the flow rate will change. A small variation is introduced in this embodiment. To describe this change in traffic, Indicates the number of pipe segments flowing out per unit time. The volume of sludge discharge fluid.
[0054] The outflow velocity at the cross section is Changes can occur within pipeline sections, including the use of... It represents a small change in flow velocity. This reflects the fluid's motion at the outlet of each pipe section. This formula is derived from the relationship between flow velocity and pipe length and segment length in fluid mechanics, taking into account the continuity and gradual change of fluid flow in the pipe.
[0055] The pressure head at the cross-section is Within the pipe sections, variations also occur due to fluid flow and energy loss. It represents a minute change in pressure head. It represents the pressure energy per unit weight of fluid at the outlet of a pipe section.
[0056] This embodiment introduces small variations in different parameters. , , This method can more accurately describe the changes in parameters during the flow of fluid within a pipeline segment, conforming to the continuity and gradual change of actual fluid flow. Defining and analyzing the parameters of each pipeline segment is beneficial for obtaining the segmented results of the entire sludge discharge pipe, providing data support for subsequent optimization and control of the sludge discharge system.
[0057] The above steps were used to complete the segmentation of the sludge discharge pipe based on the information database, and the pipe segmentation results were obtained, which provided a basis for the operation characteristics of the sludge discharge system and the optimization of the sludge discharge strategy.
[0058] After completing the segmentation of the sludge discharge pipe in the horizontal flow sedimentation tank and obtaining the pipe segmentation results, the next step is to analyze the total sludge discharge. The total sludge discharge helps to accurately analyze and evaluate the sludge discharge efficiency of the sedimentation tank, which is of great significance for optimizing the sludge discharge system parameters and ensuring the stable operation of the sedimentation tank. The analysis process of the total sludge discharge of the sludge discharge pipe in the horizontal flow sedimentation tank is as follows: The first step is to introduce the law of conservation of mass and the differential piecewise continuity equation.
[0059] The law of conservation of mass is a fundamental law that also applies in the field of fluid mechanics. For the sludge discharge pipe in a horizontal flow sedimentation tank, mass cannot be created or destroyed during the fluid flow process inside it. That is, within a defined control body, the mass flowing in must equal the mass flowing out. This principle provides a theoretical basis for the analysis of the sludge discharge volume of the sludge discharge pipe.
[0060] To more accurately analyze the fluid flow within the sludge discharge pipe, this embodiment analyzes the sludge discharge rate for any given pipe segment and introduces a differential piecewise continuity equation. This equation is derived based on the law of conservation of mass, applying the concept of mass conservation to a small control volume (pipe segment). Within the pipe segment, the fluid flow can be approximated as stable and continuous. Analyzing the mass inflow and outflow of fluid within the pipe segment helps to understand the variation patterns of fluid parameters.
[0061] The second step combines the law of conservation of mass, the differential piecewise continuity equation, and the results of pipeline segmentation to obtain the conservation expression for pipeline sludge discharge.
[0062] Based on differential piecewise continuity equation analysis, pipeline segmentation Fluid in a very short time The process involves segmenting the pipeline. In the above process, each pipeline segment is considered a tiny control volume, and the quality of its inflow and outflow is analyzed.
[0063] Calculation of mass inflow and outflow: The mass flowing into the pipe section consists of two parts. One part is the mass carried by the fluid flow, the magnitude of which is... ,in This represents the average density of the sludge discharge fluid. This indicates the inflow velocity at the beginning of a pipe segment. This indicates the cross-sectional area of a pipe segment. The other part represents the fluid transit time; the remaining part is the additional mass that flows in due to changes in the upstream flow rate of the pipe segment, and its magnitude is... , This indicates the inflow rate of a section of the pipeline. Indicates the total length of the pipe. This indicates the number of pipe segments.
[0064] The mass of the outflow pipe section is ,in This indicates the outflow velocity at the end of a pipe section. It represents a small change in flow velocity, reflecting the change in flow velocity of the fluid as it flows within a pipe section.
[0065] According to the law of conservation of mass, the mass of the section flowing into the pipeline is equal to the mass of the section flowing out of the pipeline. In other words, the conservation expression for the amount of sludge discharged from the pipeline satisfies the following relationship: , in, This represents the average density of the sludge discharge fluid. This indicates the inflow velocity at the beginning of a pipe segment. This indicates the cross-sectional area of a pipe segment. Indicates the time it takes for the fluid to pass through. This indicates the outflow velocity at the end of a pipe section. This represents the accumulated mass. This expression describes the conservation relationship of sludge discharge within a pipeline segment, providing crucial basis and technical support for further analysis of sludge discharge.
[0066] The third step is to derive the inflow analysis formula for each section of the pipeline based on the conservation expression of sludge discharge in the pipeline.
[0067] To simplify the above expression for the conservation of sludge discharge from the pipeline, first divide both sides of the equation by... get: , in It can also represent the rate of accumulation of mass.
[0068] Further derivation yields the flow rate analysis formula for each section of the pipeline: , in, This indicates the inflow rate of a section of the pipeline. This indicates the inflow velocity at the beginning of a pipe segment. This indicates the cross-sectional area of a pipe segment.
[0069] The fourth step is to analyze the inflow rate of each section of the pipeline using a segmented inflow rate analysis method.
[0070] Flow rate of each section of the pipeline It is an important parameter reflecting the flow of fluid within a pipe. As can be seen from the above analysis, Closely related to the change in flow velocity, the number of pipe segments, and the cross-sectional area, the inflow rate of each pipe segment can be accurately calculated by combining fluid mechanics principles and actual monitoring data in practical applications. Based on this, accurate analysis of the inflow rate of each pipe section can be achieved, which helps to further understand the distribution and flow characteristics of fluid in the sludge discharge pipe.
[0071] The fifth step is to integrate and analyze the cross-sectional flow rates of the pipeline segments to obtain the total amount of sludge discharged from the sludge discharge pipe in the horizontal flow sedimentation tank.
[0072] Based on the above implementation details, it can be assumed that the fluid inside the sludge discharge pipe is an incompressible fluid, i.e., the average density of the sludge discharge fluid is... The mass flow rate is constant because the density change of the sludge discharge fluid is relatively small and can be ignored. Under the above assumptions, there is a simple linear relationship between the mass flow rate and the volumetric flow rate during the fluid flow in the pipeline, which facilitates the calculation of the total sludge discharge.
[0073] Fluid passage time The total amount of sludge passing through the entire sludge discharge pipe. The amount of sludge discharged from each pipeline segment can be obtained by summing the sludge discharge volume of each segment. The total amount of mud in the mud discharge pipe for: , in, This indicates the total amount of mud in the mud discharge pipe. This represents the average density of the sludge discharge fluid. Indicates the number of pipe sections. This indicates the inflow rate of a section of the pipeline. Indicates the time it takes for the fluid to pass through.
[0074] The total amount of sludge in the sludge discharge pipe is calculated using the steps described above. It can intuitively reflect the sludge discharge capacity of a horizontal flow sedimentation tank within a certain period of time. In practical engineering applications, a reasonable target value for the total sludge discharge can be set according to the design requirements and operating conditions of the sedimentation tank. By monitoring and calculating the total sludge discharge in real time and comparing it with the target value, it is helpful to adjust the operating parameters of the sludge discharge system in a timely manner to ensure that the sludge discharge effect of the sedimentation tank reaches the best state and to ensure the efficient and stable operation of the sedimentation tank.
[0075] After analyzing the sludge discharge volume of the sludge discharge pipe in the horizontal flow sedimentation tank, further analysis of its total energy value is beneficial for a comprehensive understanding of the operating characteristics of the sludge discharge system, optimizing system design, and ensuring the efficient and stable operation of the sedimentation tank. The following will analyze the total energy value of the sludge discharge pipe in the horizontal flow sedimentation tank according to the established steps.
[0076] The first step is to analyze the head loss value of each pipeline segment based on fluid dynamics information, pressure head calculation formula, and pipeline segmentation results.
[0077] In the above analysis of sludge discharge volume in the horizontal flow sedimentation tank, relevant parameters for pressure head were set: the inlet pressure head of the sludge discharge pipe cross-section was [value missing]. The cross-sectional pressure head of the sludge discharge pipe is In fluid mechanics, pressure head is an important parameter describing the energy state of a fluid. For the sludge discharge fluid in a sludge discharge pipe, pressure head refers to the energy head of the fluid due to pressure. The formula for calculating pressure head is as follows: , in, Indicates pressure head, Indicates the pressure of the fluid. Indicates the density of the fluid. This represents the acceleration due to gravity. In a sludge discharge pipe, the pressure head reflects the energy possessed by the sludge fluid at a certain location due to pressure. This energy enables the fluid to flow. A higher pressure head indicates greater pressure energy at that location, giving the fluid a greater ability to overcome pipe resistance and continue flowing. At the beginning of the sludge discharge pipe, the pressure head is higher due to the action of external pressurizing equipment (such as a pump), thus propelling the sludge fluid towards the end of the pipe.
[0078] Flow driving force is the key factor driving the flow of sludge discharge fluid within the pipeline. In the sludge discharge pipe, the pressure head difference at different locations will cause the fluid to generate a pressure difference, which in turn creates the flow driving force. When the fluid flows from the area with high pressure head to the area with low pressure head, a flow tendency can be generated.
[0079] To analyze the energy flow within the pipeline, based on the pre-divided pipeline segments and parameter information, further analysis of the head loss values for each segment is conducted. The formula for calculating the head loss value of each pipeline section is as follows: , in, This indicates the head loss value of each section of the pipeline. This represents the head correction factor. Indicates the length of the pipe segment. This indicates the friction coefficient of the sludge discharge pipe. This indicates the inflow velocity at the beginning of a pipe segment. Indicates the radius of the sludge discharge pipe. It represents the acceleration due to gravity.
[0080] The head correction factor considers the influence of factors such as pipe roughness, fluid properties, and flow state on head loss, and its value range is determined based on experimental data or empirical formulas. The sludge discharge pipe friction coefficient is related to the pipe roughness and the Reynolds number of the fluid, and can be calculated through a Moody diagram or empirical formulas. Gravitational acceleration is usually taken as... The above formula can accurately calculate the head loss value of each pipeline section, laying the foundation for subsequent energy analysis.
[0081] The second step involves introducing the law of conservation of energy, and combining the law of conservation of energy with the head loss value to obtain the energy balance equation for each section of the pipeline.
[0082] For the fluid flow process in the sludge discharge pipe, neglecting secondary factors such as heat exchange, the fluid's energy undergoes transformation during the flow, but the total energy remains constant. Based on the law of conservation of energy, for pipe sections... Considering the energy changes of the fluid within the pipe, the fluid has a pressure head at the beginning of each pipe section. and kinetic head There is a pressure head at the end of the pipeline section. Kinetic head At the same time, head loss will occur during the flow. According to the law of conservation of energy, the energy balance equation for each section of the pipeline can be obtained as follows: , in, This indicates the inlet pressure head of the sludge discharge pipe. This indicates the inflow velocity at the beginning of a pipe segment. Represents gravitational acceleration. This indicates the pressure head at the cross-section of the sludge discharge pipe. This indicates the outflow velocity at the end of a pipe section. This represents the head loss value of the pipeline segment. The energy balance equation above clearly describes the energy conversion relationship of the fluid within the pipeline segment, that is, the energy at the beginning equals the energy at the end plus the head loss energy.
[0083] The third step is to derive the energy balance equation for each pipeline segment and obtain the energy analysis formula for each pipeline segment.
[0084] Known small change in flow velocity Substituting this into the piecewise energy balance equation, we get: , Then calculate the head loss value of each section of the pipeline. Substituting into the above formula, we get: , , , To more clearly represent the energy changes in pipe segments, the energy value of each pipe segment is defined as follows: The energy analysis formula for pipeline segments is: , in, This indicates the energy value of each section of the pipeline. This indicates the inlet pressure head of the sludge discharge pipe. This indicates the inflow velocity at the beginning of a pipe segment. Represents gravitational acceleration. This indicates the pressure head at the cross-section of the sludge discharge pipe. The above formula represents the outflow velocity at the end of the pipe segment. It reflects the change in fluid energy within the pipe segment, that is, the difference between the total energy at the beginning and the total energy at the end.
[0085] The fourth step involves optimizing the energy analysis formula for each pipeline segment by considering the impact of pressure head and flow velocity changes on the energy value of each segment, thereby obtaining a prediction function for the energy value of each pipeline segment.
[0086] Considering the combined effects of pressure head and flow velocity changes on the energy values of pipeline sections, and analyzing from an energy conversion perspective, the energy values of pipeline sections are primarily reflected in the energy dissipation represented by head loss. Therefore, it is necessary to analyze the energy values of the aforementioned pipeline sections. Optimization analysis was performed to obtain the energy values of the optimized pipeline segments. To more accurately reflect the energy changes in different pipeline sections.
[0087] Energy values of optimized pipeline segments The expression, i.e., the pipeline segment energy value prediction function, is as follows: , in, This represents the energy value of the optimized pipeline segment. This indicates a small change in pressure head velocity. This indicates the outflow velocity at the end of a pipe section. This indicates the inflow velocity at the beginning of a pipe segment. It represents the acceleration due to gravity.
[0088] Based on the minute change in pressure head velocity and small changes in flow velocity Substituting the expression into the above equation and simplifying, we get: , , , This further demonstrates that the energy value of a pipeline segment is equal to the head loss value of that segment.
[0089] The fifth step is to obtain the energy values of each pipeline segment using the pipeline segment energy value prediction function.
[0090] Based on the aforementioned pipeline segment energy prediction function, combined with known pipeline parameters and the inflow velocity at the beginning of each pipeline segment, the energy value of each pipeline segment can be accurately calculated. .
[0091] The sixth step is to integrate and calculate the energy values of the pipeline segments to obtain the total energy value of the sludge discharge pipe in the horizontal flow sedimentation tank.
[0092] The total energy value of the entire sludge discharge pipe can be obtained by combining the energy values of all pipe sections. Because the sludge discharge pipe was divided into Each segment has an energy value of [value]. (in If the total energy of the entire sludge discharge pipe is the sum of the energy values of each segment, then the total energy of the entire sludge discharge pipe is the sum of the energy values of each segment.
[0093] , in, This represents the total energy value of the sludge discharge pipe. Indicates the number of pipe sections. This represents the head correction factor. This indicates the friction coefficient of the sludge discharge pipe. Indicates the radius of the sludge discharge pipe. Represents gravitational acceleration. Indicates the length of the pipe segment. This indicates the inflow velocity at the beginning of a pipe segment.
[0094] The total energy value of the sludge discharge pipe can be obtained using the above formula. This data can reflect the energy consumption of the sludge removal system in a horizontal flow sedimentation tank during operation. In practical engineering applications, reasonable energy consumption target values can be set based on the design requirements and operating conditions of the sedimentation tank. Comparing the total energy consumption with the target value allows for timely adjustments to the operating parameters of the sludge removal system, such as the power of the pressurizing equipment and the sludge removal time, to reduce energy consumption and improve the system's operating efficiency. Furthermore, accurate analysis of the total energy consumption provides a reference for the optimized design of the sedimentation tank sludge removal system.
[0095] The uniformity of sludge discharge through the sludge discharge pipe plays a crucial role in the operation of a horizontal flow sedimentation tank. Uneven sludge discharge can lead to a series of problems, affecting the normal operation and overall efficiency of the sedimentation tank. Therefore, analyzing the uniformity coefficient of the sludge discharge pipe is of great significance. The following will elaborate on the analysis process of the uniformity coefficient of the sludge discharge pipe in a horizontal flow sedimentation tank.
[0096] The first step is to introduce the uniformity coefficient ratio analysis function and the law of conservation of energy.
[0097] When uneven sludge discharge occurs in the sludge discharge pipe, sludge will accumulate inside the pipe, and the accumulation time will be prolonged. Over time, the moisture content of the sludge layer will gradually decrease. However, if the moisture content of the sludge layer drops to a certain limit during the sludge discharge process, the static pressure of the water in the tank will be insufficient to push the nearby sludge layer. At this point, the pipe will become blocked, eventually causing the sedimentation tank to stop production. This not only increases maintenance costs but also affects the normal operation of the system.
[0098] To analyze the uniformity of sludge discharge from the sludge discharge pipe, the sludge discharge rate at the sludge inlet end of the sludge discharge pipe was set as follows in this embodiment. The amount of sludge discharged at the end is Based on this, the ratio of the two is defined as the sludge discharge uniformity coefficient, denoted by the symbol... This is represented by the following expression: The uniformity coefficient ratio analysis function is constructed to satisfy the following relationship: , Sludge uniformity coefficient The value ranges from 0 to 1. The magnitude of the value can intuitively reflect the uniformity of sludge discharge. A higher value means more uniform sludge discharge. When the discharge rate is exactly equal at the inlet and outlet of the discharge pipe, the discharge volume is in a perfectly uniform and ideal state; while when When the value is close to 0, it indicates that the sludge discharge is extremely uneven, and the amount of sludge discharged at the sludge inlet (starting end) is much smaller than the amount of sludge discharged at the end.
[0099] The second step is to derive the uniformity coefficient ratio analysis function based on the law of conservation of energy and the results of pipeline segmentation, and obtain the analysis formula for the uniformity coefficient of sludge discharge.
[0100] To analyze the influencing factors of uniform sludge discharge from the pipeline, this embodiment simplifies the sludge discharge pipe into sections of equal diameter. The sludge inlet end corresponds to the beginning of the pipe, and the end end is the end of the sludge discharge pipe. According to the law of conservation of energy, although energy transforms between different locations and forms during the sludge discharge process, the total energy remains constant. Based on the simplified model above, the following equation can be obtained: , in, This represents the proportionality coefficient related to the calculation of sludge discharge volume. This indicates the maximum amount of sludge discharged from the end of the sludge discharge pipe. This indicates the minimum amount of sludge discharged from the end of the sludge discharge pipe. This indicates the impedance inside the pipe.
[0101] The proportional coefficient related to the sludge discharge calculation helps to establish a connection between the sludge discharge and physical quantities such as energy, ensuring that the equation holds true based on the principle of energy conservation under different sludge discharge conditions, and ensuring that the dimensions and numerical relationships of the physical quantities on both sides of the equation are reasonable; the maximum value of the sludge discharge at the end of the sludge discharge pipe is the actual sludge discharge at the end; the minimum value of the sludge discharge at the end of the sludge discharge pipe is the sludge discharge at the sludge inlet (starting end); the impedance inside the pipe is closely related to factors such as the length, diameter, inner wall roughness, and water flow velocity of the pipe, reflecting the overall obstruction effect of the pipe on the water flow.
[0102] Combining the above equation of the law of conservation of energy, for After refining and transforming, we can obtain: , Then, divide both sides of the equation by... Combined with the uniformity coefficient of sludge discharge The definition, through algebraic operations, yields the analytical formula for the sludge uniformity coefficient: , , The above analytical formula clearly reveals the relationship between the sludge discharge uniformity coefficient and the internal resistance of the pipe, providing a solid theoretical basis for further analysis of the uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank. The third step is to use the sludge discharge uniformity coefficient analysis formula to analyze the uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank.
[0103] In practical applications, to accurately analyze the uniformity coefficient of the sludge discharge pipe in a horizontal flow sedimentation tank, it is necessary to accurately analyze the internal impedance of the pipe. The specific values of the above parameters can be determined through experimental measurement or theoretical calculation. In an optional embodiment, a model with the exact same size and shape as the actual sludge discharge pipe is fabricated for testing. During the test, the pressure difference between the two ends of the pipe and the water flow rate through the pipe are measured. Simultaneously, by combining the pipe's geometric parameters and using the pipe resistance calculation formula in fluid mechanics, the specific values can be determined. The value of .
[0104] In this embodiment, the uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank was analyzed. A uniformity coefficient ratio analysis function and a sludge discharge uniformity coefficient analysis formula were established. This provides a theoretical basis for evaluating and improving the sludge discharge uniformity of the sludge discharge pipe, which helps to further improve the operating efficiency and water treatment effect of the horizontal flow sedimentation tank.
[0105] S3. Based on the total sludge discharge, total energy value, uniformity coefficient, and information database, the cross-sectional inflow rate, hydraulic balance state, sludge discharge pipe energy, and sludge return ratio in the horizontal flow sedimentation tank are regulated. The specific implementation steps and contents are as follows: In an alternative embodiment, the cross-sectional inflow rate in the horizontal flow sedimentation tank is regulated.
[0106] To optimize the operation of the horizontal flow sedimentation tank, the inflow rate of each pipeline section is adjusted by combining the inflow rate of each section with the total amount of sludge discharged. This helps to comprehensively analyze the inflow rate conditions of the sludge discharge pipe and further ensure the efficient and stable operation of the sedimentation tank.
[0107] The inflow rate of the sludge discharge pipe is analyzed by combining the cross-sectional inflow rate and total sludge discharge volume of the pipeline sections.
[0108] The cross-sectional inflow rate of a pipeline segment is an important indicator for measuring the water flow into each segment. Its calculation formula is as follows: This formula can accurately determine the inflow rate of each segment.
[0109] The amount of sludge discharged from each pipeline section is closely related to the inflow rate at each section, and the calculation formula is as follows: Using this formula, along with the known cross-sectional inflow rate, fluid density, and transit time, the sludge discharge rate for each segment can be accurately calculated.
[0110] The total amount of sludge in the sludge discharge pipe is a key parameter for evaluating the overall effectiveness of the sludge discharge system, and its calculation formula is as follows: This formula calculates the total amount of mud in the entire mud discharge pipe by summing the mud discharge amounts of each section of the pipe.
[0111] Based on the calculation results of the above formula and the information database of the horizontal sedimentation tank, the inflow rate of the sludge discharge pipe can be effectively understood.
[0112] Then, based on the inflow conditions and information database, the sludge discharge time interval and inflow / outflow velocity of the sludge discharge pipe can be adjusted, thereby achieving scientific control of the inflow rate at the cross section of the horizontal flow sedimentation tank.
[0113] Controlling the inflow rate at different sections: This is achieved by monitoring and adjusting the inflow velocity at the beginning of each pipe section. Terminal outflow velocity and the cross-sectional area of the pipeline sections Detect the inflow rate at each cross-section of the pipeline. If the inflow rate of a certain segment is found to be too large or too small, the valve opening can be adjusted to change the flow rate. When the inflow rate of a certain segment is too large, the valve can be closed to reduce the flow rate; when the inflow rate of a certain segment is too small, the valve can be opened to increase the flow rate.
[0114] Reasonable allocation of system flow: Based on the inflow rate of each segment, the overall system flow should be reasonably allocated to ensure balanced flow across all parts and avoid excessive or insufficient flow in certain areas, which could affect the sedimentation effect. For multiple parallel pipe segments, adjustments can be made to ensure that the inflow rate of each segment is basically consistent. Flow regulating valves can be used to independently adjust the flow rate of each parallel pipe. Based on the monitored inflow rate data of each segment, the valve opening can be adjusted in real time to achieve a balanced inflow rate across all segments.
[0115] Calculate the sludge discharge volume for a single segment: Calculate the sludge discharge volume for each segment using the formula for each pipeline segment. Determine the appropriate sludge discharge interval based on the sludge concentration and treatment requirements of the sedimentation tank. If the sludge concentration is high, the sludge discharge interval can be shortened appropriately and the sludge discharge volume can be increased; if the sludge concentration is low, the sludge discharge interval can be extended and the sludge discharge volume can be reduced.
[0116] Calculate and adjust the total sludge discharge volume: Calculate the total sludge volume of the entire sludge discharge pipe according to the formula for the total sludge volume of the sludge discharge pipe, and adjust the operating parameters of the sludge discharge equipment accordingly, such as the flow rate and running time of the sludge discharge pump. If the calculated total sludge volume is large, the flow rate of the sludge discharge pump can be increased or its running time can be extended to ensure that the total sludge discharge volume meets the sludge discharge requirements of the sedimentation tank and avoid sludge accumulation. If the total sludge volume is small, the flow rate of the sludge discharge pump can be reduced or its running time can be shortened to prevent excessive sludge discharge and affect the normal operation of the sedimentation tank.
[0117] Based on the above steps, the inflow rate of the pipeline sections in the horizontal flow sedimentation tank is regulated and managed, thereby achieving control over the cross-sectional inflow rate and effectively improving the operating efficiency and treatment effect of the sedimentation tank. In another alternative embodiment, the hydraulic balance in the horizontal flow sedimentation tank is regulated.
[0118] To ensure the stable and efficient operation of the horizontal flow sedimentation tank, its hydraulic balance needs to be regulated. By combining the head loss value, the energy value of each pipeline segment, and the total energy value, the head change of the sludge discharge pipe can be comprehensively monitored, and targeted measures can be taken based on the monitoring results to achieve effective regulation of the hydraulic balance.
[0119] The head change of the sludge discharge pipe is monitored by combining the head loss value, the energy value of each pipeline segment, and the total energy value.
[0120] The head loss value of a pipeline segment is a key indicator for assessing the energy loss of water flowing in the pipeline, and its calculation formula is as follows: By periodically calculating the head loss values of each pipeline segment using the aforementioned formula, the changes in the pipeline's hydraulic characteristics over different time periods can be understood. Simultaneously, by installing pressure sensors and other equipment to monitor the head changes in each segment in real time, and calculating the head loss based on the relationship between pressure and head, the calculation results can be compared and analyzed with real-time monitoring data. This helps in the timely detection of abnormal head changes.
[0121] The energy value of a pipe segment reflects the energy state of the water flow within that segment, and its calculation formula is as follows: This formula can be used to calculate the energy value of each pipe segment, thereby analyzing the energy distribution in each segment.
[0122] The total energy value of the entire sludge discharge pipe is an important indicator for evaluating the energy consumption of the entire sludge discharge system. Its calculation formula is as follows: .
[0123] By combining the above expression with relevant monitoring information, the head change of the sludge discharge pipe can be obtained.
[0124] Next, based on changes in water head and information database, the sludge discharge frequency of the sludge discharge pipe is adjusted, and pipeline flushing measures are increased; based on the sludge discharge frequency and pipeline flushing measures, the hydraulic balance state in the horizontal flow sedimentation tank is effectively controlled.
[0125] By identifying the sections with excessive energy consumption based on the calculated energy values of each pipeline segment, it is possible to check whether there are problems such as unreasonable pipeline design, excessive flow velocity, or excessive friction in the relevant pipeline segments. Corresponding optimization measures can then be taken for different problems. If the pipeline design is unreasonable, such as the pipe diameter being too small or the number of bends being too many, the pipeline can be modified to increase the pipe diameter and reduce the number of bends in order to reduce water flow resistance.
[0126] If excessive flow rate leads to increased energy loss, this can be addressed by adjusting the valve opening or optimizing the pump's operating parameters to reduce the flow rate. Adjust to a reasonable range.
[0127] A reasonable range for the total energy consumption can be determined by considering the operating cost and efficiency requirements of the sedimentation tank. The total energy consumption of the entire sludge discharge pipe is calculated accordingly. The entire sludge removal system's equipment configuration and operation control are optimized. When selecting sludge pumps, appropriate pump models and quantities are chosen based on sludge removal requirements and total energy range, ensuring sludge removal needs are met while minimizing energy consumption. Simultaneously, optimizing equipment operating time avoids operation under low load or ineffective conditions. This can be achieved by installing an intelligent control system that automatically adjusts the pump's operating time and frequency based on sludge concentration and discharge volume in the sedimentation tank, thus improving the system's overall energy efficiency.
[0128] In one embodiment, based on energy calculations and monitoring results of the sludge discharge pipe, the cause of excessive head loss is analyzed. If it is found that the friction coefficient is reduced due to sludge deposition inside the pipe... To address the issue, measures such as increasing the frequency of sludge removal or flushing the pipes can be taken. Increasing the frequency of sludge removal can promptly remove sludge from the pipes, reducing the impact of sludge deposition on water flow resistance. Pipe flushing can clean the inner walls of the pipes with high-pressure water or chemical agents to remove dirt and deposits and reduce the friction coefficient.
[0129] To further consider the head loss of each pipeline section and ensure the hydraulic balance of the entire sludge removal system, adjustments can be made to sections with significant differences in head loss using the following methods: Add regulating valves: Add regulating valves to sections with large head losses. By adjusting the opening of the valves, the water flow velocity and head loss can be controlled, so that the head loss of each section is more reasonable.
[0130] Balanced flow distribution: For parallel pipeline sections, adjusting the flow rate in each section ensures a more balanced flow distribution, preventing differences in head loss due to excessive or insufficient flow. This can be achieved by installing flow regulating valves or using an intelligent flow control system.
[0131] In another alternative embodiment, the sludge return ratio in the horizontal flow sedimentation tank is adjusted.
[0132] Based on the scraper control model and information database, the sludge return ratio control model was optimized to obtain the improved sludge return ratio control model.
[0133] The information database also collects various data related to the sludge return ratio, including but not limited to key information such as the current return ratio value and historical return ratio trends. Simultaneously, flow meters and pressure sensors installed on the sludge return pipeline using the sludge monitoring module monitor sludge return ratio-related data in real time.
[0134] Based on the design requirements and actual operating experience of the sedimentation tank, the initial control range of the sludge return ratio is set to [value missing] in this embodiment. This range ensures effective sludge return, maintains the concentration and treatment capacity of microorganisms in the sedimentation tank, and ensures the treatment effect of the sedimentation tank; it also avoids excessive sludge return ratio, which can lead to energy waste, such as increased pump energy consumption, increased equipment burden, and accelerated wear and tear on pumps, pipes, and other equipment.
[0135] In another alternative embodiment, the scraper speed in the horizontal flow sedimentation tank is regulated.
[0136] The scraper speed control model is constructed based on the design scraper speed value as the default value, and the turbidity detection instrument data and the effluent SS data.
[0137] Scraper speed control model by period Control is performed in each cycle. Within this process, the scraper speed and sludge return ratio are recorded based on real-time data feedback and historical data, and corresponding operations are performed. In this embodiment, the cycle... Can be set to minutes, and the scraper speed control model satisfies the following relationship: , in, Indicates the scraper speed. This indicates the default scraper speed, where 'i' represents the adjustment factor for the scraper speed. In this example, the speed starts from 0.6. Start according to Adjust the speed by moving up or down by one level (i.e., 5Hz).
[0138] Information on suspended solids in the effluent is obtained based on the default scraper speed and the self-adjusting control model of the sludge scraper in the scraper control model.
[0139] The above self-adjusting control model for the sludge scraper satisfies the following relationship: , in, This represents the calculated running speed. This indicates the default scraper speed. This represents the operating speed adjustment coefficient. This indicates the impact of suspended solids in the effluent on the system. This indicates the measured value of suspended solids in the effluent. Indicates the design value of suspended solids in the effluent. This indicates that turbidity affects the system. This indicates the measured value of turbidity in the effluent. Indicates the design value for effluent turbidity; Information on suspended solids in the effluent is obtained based on the default value of the scraper speed and the self-adjusting control model of the sludge scraper. Based on the above information, a preliminary control method using a sludge return ratio control model is employed. The sludge return ratio control model satisfies the following relationship: , in, Indicates the sludge return ratio. This indicates the default value for the sludge return ratio. The adjustment coefficient representing the sludge return ratio; The default sludge return ratio needs to be set based on the design conditions and normal operating experience of the sedimentation tank. The design conditions include factors such as influent water quality, water volume, sedimentation tank size, and treatment capacity.
[0140] The value of the sludge return ratio adjustment coefficient is automatically adjusted by the horizontal flow sedimentation tank sludge discharge system based on actual operating conditions, such as changes in influent water quality and the treatment effect of the sedimentation tank. The aforementioned horizontal flow sedimentation tank sludge discharge system can adopt a programmable logic controller or a distributed control system to calculate and adjust the adjustment coefficient in real time according to preset logic and algorithms.
[0141] By using a sludge return ratio control model, flexible control of the sludge return ratio can be initially achieved to meet the treatment needs under different operating conditions. When the influent water quality deteriorates and the organic matter content increases, the control system automatically increases the adjustment coefficient to increase the sludge return ratio, thereby increasing the concentration of microorganisms in the sedimentation tank and enhancing the treatment capacity for pollutants. When the influent water quality is good, the adjustment coefficient is appropriately reduced to decrease the sludge return ratio and reduce energy consumption.
[0142] To further improve the applicability and accuracy of the sludge return ratio control model, the model was optimized based on effluent suspended solids information, the scraper control model, and an information database, resulting in an improved sludge return ratio control model. The improved sludge return ratio control model satisfies the following relationship: , in, This represents the calculated sludge return ratio. This indicates the default value for the sludge return ratio. This indicates the sludge return ratio adjustment coefficient. Indicates the influence coefficient of suspended solids in the effluent. This indicates the measured value of suspended solids in the effluent. Indicates the design value of suspended solids in the effluent. Indicates the influence coefficient of sludge concentration. This indicates the measured value of sludge concentration. This indicates the design value for sludge concentration; The influence coefficient of suspended solids in the effluent reflects the measured value of suspended solids in the effluent. With design value The effect of deviation on sludge return ratio. When When this occurs, it indicates that the effluent quality has deteriorated, requiring an increase in the sludge return ratio. At this point, the effluent suspended solids influence coefficient... The value will increase accordingly; the sludge concentration influence coefficient reflects the measured sludge concentration value. With design value The difference in reflux ratio affects the adjustment of the reflux ratio. When When the sludge concentration is low, it indicates that the sludge return ratio needs to be increased to improve the treatment effect. At this point, the sludge concentration influence coefficient... The value will increase accordingly.
[0143] The improved sludge return ratio control model can effectively monitor the effluent quality and sludge concentration of horizontal flow sedimentation tanks, enabling the sludge removal system of horizontal flow sedimentation tanks to monitor the effluent quality (measured value of suspended solids in the effluent) in real time. ) and sludge concentration (sludge concentration measurement value) Based on the data, the sludge return ratio can be further dynamically adjusted.
[0144] In one embodiment, when the suspended solids in the effluent exceed the standard, the sludge discharge system of the horizontal flow sedimentation tank can automatically increase the sludge return ratio according to the model, thereby increasing the concentration of microorganisms in the sedimentation tank and enhancing the removal of suspended solids. When the sludge concentration is too low, the return ratio is also increased to raise the sludge concentration and ensure the treatment effect. Through dynamic control, the treatment effect and stability of the sedimentation tank can be significantly improved, achieving efficient control of sludge return in the horizontal flow sedimentation tank.
[0145] S4. To comprehensively improve the operating efficiency and treatment effect of the horizontal flow sedimentation tank, and to achieve the goals of rational utilization of water resources and environmental protection, based on the cross-sectional inflow rate, hydraulic balance, sludge discharge pipe energy, and sludge return ratio, intelligent linkage control and parameter coordination adjustment of the sludge discharge equipment are implemented. The specific implementation steps and contents are as follows: I. Cross-sectional inflow regulation In this embodiment, flow meters, velocity meters, and pressure sensors can be used to accurately acquire key data such as velocity, cross-sectional area, and fluid transit time at the beginning and end of pipeline sections. Simultaneously, valve adjustment and pipeline replacement technologies can be applied to various fluid transport systems, enabling effective control of the inflow rate across the cross-section based on measurement data.
[0146] Precise control of the inflow and outflow rates at the sedimentation tank can bring significant economic benefits. On the one hand, it can improve the treatment efficiency of the sedimentation tank, reduce sludge accumulation, and reduce equipment wear, thereby reducing maintenance costs and operating expenses. On the other hand, reasonable allocation of system flow can extend the service life of equipment and further improve economic efficiency.
[0147] Based on information database data and calculation formulas , The inflow rate and total sludge volume of each pipe section are calculated. The calculated inflow rate and total sludge volume can be compared with the preset values. If there is a deviation, the intelligent low-carbon horizontal flow sedimentation tank sludge discharge system will promptly issue instructions to adjust the valve opening so that the inflow rate and total sludge volume reach the preset range.
[0148] By controlling the inflow rate of each section of the pipeline, the water flow distribution in the sedimentation tank can be made uniform, avoiding excessively fast or slow local water flow velocities, improving sludge sedimentation efficiency, and ensuring effluent quality. Calculating the sludge discharge volume based on the inflow rate allows for reasonable adjustment of the sludge discharge equipment's operating parameters, achieving a scientific and automated sludge discharge process. This avoids sludge accumulation or excessive sludge discharge, improving the stability and reliability of the sludge discharge system. This intelligent control strategy can be flexibly adjusted according to different operating conditions and treatment requirements of the sedimentation tank, exhibiting strong adaptability and versatility, and meeting the needs of horizontal flow sedimentation tanks of different sizes and types.
[0149] II. Regulation of Hydraulic Balance The technologies for head loss calculation, energy value analysis, and pressure monitoring are mature. Among them, the technologies for selecting sludge pumps, modifying pipelines, and cleaning are highly reliable and operable, and can meet the hydraulic balance control requirements of horizontal flow sedimentation tanks. Implementing the above-mentioned hydraulic balance control strategies can improve the treatment efficiency of sedimentation tanks, reduce energy consumption and equipment maintenance costs, and have good economic benefits.
[0150] The intelligent low-carbon horizontal flow sedimentation tank sludge removal system can calculate the head loss of each pipeline section based on monitoring data and the structural parameters of the sedimentation tank. At the same time, it can analyze the energy distribution in the sedimentation tank to determine the total energy value and the energy status of each area. Then, based on the head loss calculation and energy value analysis results, it can adjust the operating parameters of the system sludge removal pump, such as speed and flow rate. If necessary, it can modify and clean the pipeline to further adjust the hydraulic balance.
[0151] Effective regulation of the hydraulic balance state can ensure uniform water flow distribution within the sedimentation tank, reduce short-circuiting and dead zones, improve sludge settling efficiency, and guarantee effluent quality. Reasonable control of total energy and optimization of equipment operation can reduce energy consumption and equipment wear, thereby reducing operating costs and maintenance expenses. Ensuring the hydraulic balance of the sludge discharge system can prevent local drainage obstruction or backflow, improve system stability and reliability, and reduce the probability of failure.
[0152] III. Energy Regulation of Sludge Discharge Pipe Through the relevant equipment in the sludge monitoring module, parameters such as pressure and flow velocity of the fluid in the sludge discharge pipe can be monitored in real time, combined with formulas. It can accurately calculate the energy value of the sludge discharge pipe, optimize the energy distribution of the sludge discharge pipe based on the energy value, reduce energy consumption, reduce equipment wear, extend equipment service life, thereby reducing long-term operating costs and having good economic benefits.
[0153] The intelligent low-carbon horizontal flow sedimentation tank sludge discharge is based on the segmented energy value of the pipeline and the total energy value of the sludge discharge pipe to determine whether the energy distribution of the sludge discharge pipe is reasonable. If the energy distribution of the sludge discharge pipe is unreasonable, the system adjusts the variable frequency speed control device of the sludge discharge pump according to the analysis results, changes the output power of the sludge discharge pump, and makes the energy of the sludge discharge pipe reach the optimal distribution state.
[0154] Reasonable regulation of the sludge discharge pipe energy can avoid energy waste, reduce energy consumption, and meet the requirements of energy conservation and emission reduction. Optimizing the energy distribution of the sludge discharge pipe can make the sludge discharge process smoother, improve sludge discharge efficiency, and reduce the deposition of sludge in the sludge discharge pipe. It can also reduce the frequent start-stop and overload operation of the sludge discharge pump, reduce equipment wear, and extend the service life of the sludge discharge pump and sludge discharge pipe.
[0155] IV. Sludge Return Ratio Adjustment Based on the current reflux ratio value, historical reflux ratio change trends, and other factors, combined with real-time monitoring of influent and effluent water quality indicators by online water quality monitoring instruments, the sludge reflux ratio control model can achieve automatic adjustment of the sludge reflux ratio.
[0156] The current sludge return ratio is calculated based on monitoring data and the sludge return ratio control model. The calculated sludge return ratio is compared with the preset value. If there is a deviation, the operating parameters of the sludge return pump, such as speed and flow rate, need to be adjusted to make the sludge return ratio reach the preset range.
[0157] Dynamically adjusting the sludge return ratio based on influent and effluent water quality indicators can improve the removal efficiency of pollutants in the sedimentation tank and ensure that the effluent water quality consistently meets standards. A reasonable sludge return ratio can reduce sludge production and lower sludge treatment costs, such as sludge dewatering, transportation, and disposal expenses. It also avoids energy waste caused by an excessively high sludge return ratio, such as increased pump energy consumption, thus reducing operating costs.
[0158] Furthermore, intelligent linkage control and parameter coordinated adjustment are implemented for the aforementioned multiple parameters.
[0159] By integrating the above-mentioned cross-sectional inflow rate, hydraulic balance state, sludge discharge pipe energy, pipeline parameters, and sludge return ratio, a unified horizontal flow sedimentation tank sludge discharge control system is obtained. This system can collect the control data of each parameter in real time and perform comprehensive analysis and processing.
[0160] Based on the actual operating conditions and treatment requirements of the horizontal flow sedimentation tank, a parameter coordination adjustment strategy is formulated. When the influent flow rate changes, the sludge discharge control system of the horizontal flow sedimentation tank can simultaneously adjust parameters such as the cross-sectional influent flow rate, sludge return ratio, and sludge discharge pipe energy to ensure stable treatment effect of the sedimentation tank; when the hydraulic balance is abnormal, the operating parameters of the sludge discharge pump and pipeline parameters are adjusted in a timely manner to restore hydraulic balance.
[0161] V. Scraper Speed Control During the operation of a horizontal flow sedimentation tank, the proper control of the scraper speed plays a crucial role in the sedimentation effect and the stable operation of the system. When the following different operating conditions occur, the scraper speed and external reflux ratio need to be adjusted according to the corresponding strategies.
[0162] When floating sludge appears at the effluent outlet, and high sludge concentration and thick sludge layer are detected, along with elevated readings from the turbidity meter, sludge concentration meter, and SS (suspended solids) meter, the scraper speed should be checked first. Different measures should be taken depending on the speed range: If the scraper speed is less than 0.3, it should be increased to enhance the scraping effect, promote sludge discharge, and prevent excessive sludge accumulation in the sedimentation tank. Simultaneously, the external reflux ratio should be increased to increase the amount of sludge entering the sedimentation tank, further increasing the concentration of microorganisms and enhancing the treatment capacity for pollutants. By coordinating the adjustment of scraper speed and external reflux ratio, the sludge distribution and treatment effect in the sedimentation tank can be improved. If the scraper speed is greater than 0.3 but less than 0.6, only the external reflux ratio needs to be increased, as the current scraper speed meets the requirements. Increasing the external reflux ratio can appropriately increase the amount of sludge, helping to improve the sedimentation effect, without simultaneously adjusting the scraper speed to avoid unnecessary interference from excessive adjustment. If the scraper speed is greater than 0.6, it should be reduced to prevent excessive agitation of the sludge, which would affect sedimentation. At the same time, the external reflux ratio is increased to maintain a suitable sludge concentration and treatment capacity in the sedimentation tank.
[0163] When the sludge concentration is low, the sludge layer is thin, and the effluent turbidity is low, the scraper speed should be checked first, and adjustments should be made as follows based on the results: If the scraper speed is greater than 0.3, reduce the scraper speed to reduce unnecessary energy consumption and avoid excessive disturbance to the light sludge caused by excessive scraper speed. At the same time, reduce the external reflux ratio to reduce the amount of sludge entering the sedimentation tank, so that the sludge concentration in the sedimentation tank is maintained at an appropriate level; if the scraper speed is less than 0.3, simply reducing the external reflux ratio is sufficient. The current scraper speed is already low, and further reducing the scraper speed will affect the sludge scraping effect, so the system operation status is adjusted only by reducing the external reflux ratio.
[0164] During the entire scheduling process, if either of the following two situations occurs, the scraper speed must be immediately increased to 0.3: 1. The appearance of large, visible pieces of floating sludge in the sedimentation zone indicates abnormal sludge settling in the sedimentation tank. The scraper speed needs to be increased promptly to enhance the scraping effect, promote sludge discharge, and prevent further accumulation of floating sludge that could affect the effluent quality. 2. If the effluent SS (suspended solids) data is close to the design effluent value, it indicates that the effluent quality may not meet standards. Increasing the scraper speed can improve the sedimentation effect, reduce the effluent SS content, and ensure that the effluent quality consistently meets standards.
[0165] The sludge removal system can switch between different operating conditions. Based on real-time monitoring data from turbidity meters, sludge concentration meters, and suspended solids (SS) meters, it can accurately adjust the scraper speed and external return pump flow rate to achieve optimal system operation. Simultaneously, the system possesses the ability to self-learn and adjust its control program. By continuously collecting and analyzing operational data, it can automatically adjust control parameters and optimize the control strategies for scraper speed and external return ratio to adapt to different influent water qualities and operating conditions, thereby improving the system's intelligence level and operational efficiency.
[0166] In this embodiment, the sludge discharge control system for the horizontal flow sedimentation tank can monitor the operating status and parameters of the sludge discharge equipment in real time. When abnormalities occur, it will issue early warning signals in a timely manner and take corresponding measures to handle them. When the energy of the sludge discharge pipe is too high or too low, the system will automatically adjust the output power of the sludge discharge pump; when the sludge return ratio exceeds the preset range, the system will automatically adjust the operating parameters of the sludge return pump.
[0167] Through intelligent linkage control and parameter coordination adjustment, the various parameters of the sludge discharge equipment are adjusted in coordination, which helps to improve the overall operating efficiency and treatment effect of the sedimentation tank. It can adjust parameters according to different operating conditions and treatment requirements of the sedimentation tank, and has strong adaptability and stability, which can reduce manual intervention and operational errors. Through real-time monitoring and data analysis, it provides a scientific basis for the operation and management of the sedimentation tank, and realizes the scientific, automated and intelligent management of the sludge discharge equipment.
[0168] Through the above steps, based on the cross-sectional inflow rate, hydraulic balance, sludge discharge pipe energy, and sludge return ratio, intelligent linkage control and parameter coordination adjustment of the sludge discharge equipment in the horizontal flow sedimentation tank can be achieved. This can effectively improve the operating efficiency and treatment effect of the sedimentation tank, reduce operating costs and maintenance expenses, and achieve the goals of rational utilization of water resources and environmental protection.
[0169] Please see Figure 3 In an optional embodiment, to efficiently execute the intelligent low-carbon horizontal flow sedimentation tank sludge removal method provided by the present invention, the present invention also provides an intelligent low-carbon horizontal flow sedimentation tank sludge removal system. In this system, input devices, a processor, an output device, and a memory are interconnected. The memory stores a computer program, which includes program instructions. The processor is configured to call the program instructions and execute the specific steps of the relevant embodiments of the intelligent low-carbon horizontal flow sedimentation tank sludge removal method provided by the present invention. The intelligent low-carbon horizontal flow sedimentation tank sludge removal system of the present invention has a complete and stable structure, and can efficiently execute the intelligent low-carbon horizontal flow sedimentation tank sludge removal method of the present invention, thereby improving the overall applicability and practical application capability of the present invention.
[0170] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.
Claims
1. A method for sludge removal from an intelligent, low-carbon horizontal flow sedimentation tank, characterized in that, Includes the following steps: A sludge monitoring module is deployed to monitor data from the horizontal flow sedimentation tank and obtain an information database of the horizontal flow sedimentation tank. The sludge discharge pipe is segmented based on the information database, and the pipe segmentation results are obtained. The total amount of sludge discharged, total energy value, and uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank are analyzed in combination with the pipe segmentation results and the information database. The cross-sectional inflow, hydraulic balance, sludge discharge pipe energy, and sludge return ratio in the horizontal flow sedimentation tank are regulated based on the total sludge discharge, the total energy value, the uniformity coefficient, and the information database. Based on the cross-sectional inflow rate, the hydraulic balance state, the sludge discharge pipe energy, and the sludge return ratio, intelligent linkage control and parameter coordinated adjustment of the sludge discharge equipment of the horizontal flow sedimentation tank are realized.
2. The sludge removal method for the intelligent low-carbon horizontal flow sedimentation tank according to claim 1, characterized in that, The step of segmenting the sludge discharge pipe based on the information database and obtaining the pipe segmentation results includes: The parameter information of the sludge discharge pipe is obtained based on the information database; Based on the parameter information, the pipe is divided into equal parts from the beginning of the sludge discharge pipe to obtain the divided sludge discharge pipe; By combining the segmented sludge discharge pipe and the parameter information, the pipeline segmentation parameters are defined and the pipeline segmentation results are obtained.
3. The sludge removal method for the intelligent low-carbon horizontal flow sedimentation tank according to claim 1, characterized in that, The process of segmenting the sludge discharge pipe based on the information database and obtaining the pipe segmentation results, combined with the pipe segmentation results and the information database, analyzes the total sludge discharge volume, total energy value, and uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank, including: Introduce the law of conservation of mass and the differential piecewise continuity equation; Combining the mass conservation law, the differential piecewise continuity equation, and the pipeline segmentation results, we obtain the conservation expression for pipeline sludge discharge. Based on the aforementioned conservation expression for sludge discharge from the pipeline, the analytical formula for the inflow rate of the pipeline segment is derived. The flow rate of each section of the pipeline is analyzed using the flow rate analysis formula. By integrating and analyzing the cross-sectional inflow of the pipeline segments, the total amount of sludge discharged from the sludge discharge pipe in the horizontal flow sedimentation tank is obtained.
4. The sludge removal method for the intelligent low-carbon horizontal flow sedimentation tank according to claim 1, characterized in that, The process of segmenting the sludge discharge pipe based on the information database and obtaining the pipe segmentation results, combined with the pipe segmentation results and the information database, analyzes the total sludge discharge volume, total energy value, and uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank, including: Based on fluid dynamics information, pressure head calculation formula, and the pipeline segmentation results, the head loss value of each pipeline segment is analyzed. By introducing the law of conservation of energy and combining the law of conservation of energy with the head loss value, the energy balance equation for the pipeline segment is obtained. The energy balance equations for the pipeline segments are derived, and the energy analysis formulas for the pipeline segments are obtained. The energy analysis formula for pipeline segments is optimized by taking into account the impact of changes in pressure head and flow velocity on the energy value of pipeline segments, so as to obtain the energy value prediction function for pipeline segments. The energy values of each pipeline segment are obtained using the pipeline segment energy value prediction function. The energy values of the pipeline segments are integrated and calculated to obtain the total energy value of the sludge discharge pipe in the horizontal flow sedimentation tank.
5. The sludge removal method for the intelligent low-carbon horizontal flow sedimentation tank according to claim 1, characterized in that, The process of segmenting the sludge discharge pipe based on the information database and obtaining the pipe segmentation results, combined with the pipe segmentation results and the information database, analyzes the total sludge discharge volume, total energy value, and uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank, including: Introduce the uniformity coefficient ratio analysis function and the law of conservation of energy; Based on the energy conservation law and the pipeline segmentation results, the uniformity coefficient ratio analysis function is derived, and the sludge discharge uniformity coefficient analysis formula is obtained. The uniformity coefficient of the sludge discharge pipe in the horizontal flow sedimentation tank was analyzed using the aforementioned sludge discharge uniformity coefficient analysis formula.
6. The sludge removal method for the intelligent low-carbon horizontal flow sedimentation tank according to claim 3, characterized in that, The regulation of cross-sectional inflow, hydraulic balance, sludge discharge pipe energy, and sludge return ratio in the horizontal flow sedimentation tank based on the total sludge discharge, total energy value, uniformity coefficient, and information database includes: The inflow rate of the sludge discharge pipe is analyzed by combining the cross-sectional inflow rate of the pipeline segment and the total sludge discharge volume. Adjust the sludge discharge time interval and inlet / outlet flow rate according to the inlet flow conditions and the information database; The flow rate at the cross section of the horizontal flow sedimentation tank is controlled based on the sludge discharge time interval and the inflow and outflow velocities.
7. The intelligent low-carbon horizontal flow sedimentation tank sludge removal method according to claim 4, characterized in that, The regulation of cross-sectional inflow, hydraulic balance, sludge discharge pipe energy, and sludge return ratio in the horizontal flow sedimentation tank based on the total sludge discharge, total energy value, uniformity coefficient, and information database includes: The head change of the sludge discharge pipe is monitored by combining the head loss value, the energy value of the pipe segment, and the total energy value. Based on the changes in water head and the information database, the sludge discharge frequency of the sludge discharge pipe is adjusted and pipeline flushing measures are increased; The hydraulic balance in the horizontal flow sedimentation tank is controlled based on the sludge discharge frequency and the pipeline flushing measures.
8. The sludge removal method for the intelligent low-carbon horizontal flow sedimentation tank according to claim 1, characterized in that, The regulation of cross-sectional inflow, hydraulic balance, sludge discharge pipe energy, and sludge return ratio in the horizontal flow sedimentation tank based on the total sludge discharge, total energy value, uniformity coefficient, and information database includes: Based on the scraper control model and the information database, the sludge return ratio control model was optimized to obtain the improved sludge return ratio control model. The improved sludge return ratio control model was used to monitor the effluent quality and sludge concentration of the horizontal flow sedimentation tank. The sludge return ratio is dynamically adjusted based on the effluent quality and sludge concentration to control the sludge return in the horizontal flow sedimentation tank.
9. The sludge removal method for the intelligent low-carbon horizontal flow sedimentation tank according to claim 8, characterized in that, The optimization of the sludge return ratio control model based on the scraper control model and the information database includes: A scraper control model is introduced, which includes a scraper speed control model and a sludge scraper self-adjustment control model. The default value of the scraper speed is obtained through the scraper speed control model. Information on suspended solids in the effluent is obtained based on the default scraper speed and the self-adjusting control model of the sludge scraper. The sludge return ratio control model is optimized based on the effluent suspended solids information, the scraper control model, and the information database.
10. A smart, low-carbon horizontal flow sedimentation tank sludge removal system, characterized in that, The system includes a processor, an input device, an output device, and a memory, which are interconnected. The memory stores a computer program, which includes program instructions. The processor is configured to invoke the program instructions to execute the intelligent low-carbon horizontal flow sedimentation tank sludge removal method as described in any one of claims 1-9.
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